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Jeremy Fitzhardinge c7b28349a6 xen: use percpu interrupts for IPIs and VIRQs

commit aaca49642b upstream.

IPIs and VIRQs are inherently per-cpu event types, so treat them as such:
 - use a specific percpu irq_chip implementation, and
 - handle them with handle_percpu_irq

This makes the path for delivering these interrupts more efficient
(no masking/unmasking, no locks), and it avoid problems with attempts
to migrate them.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-09-20 13:17:43 -07:00

xenbus

xen: avoid allocation causing potential swap activity on the resume path

2010-07-05 11:10:59 -07:00

xenfs

headers: remove sched.h from poll.h

2009-10-04 15:05:10 -07:00

balloon.c

xen: try harder to balloon up under memory pressure.

2009-12-18 14:04:58 -08:00

cpu_hotplug.c

xen: honour VCPU availability on boot